Automatic wagon-brake



Patented Apr. 25, |899. G. BRUHN. AUTOMATIC WAGON BRAKE. (Applxcatxon led Feb 17 1899 INVENTOR ATTORNEY,

@PATENT Trient.

GEORGE BRUIIN, OF IVINONA, MINNESOTA.

AUTOMATIC WAGON-BRAKE.

.SPECIFICATION forming part of Letters Patent No. 623,881, dated April 25, 1899.

Application filed February 17, 1 899.

T0 all wtont t may concern:

Be it known that I, GEORGE BRUHN, a citizen of the United States, and a resident of Winona, in the county of Winona and State of Minnesota, have invented certain new and useful Improvements in Automatic Wagon- Brakes; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figure-s of reference marked thereon,which form a part of this specification.

Figure 1 of the drawings is a perspective view showing the invention as in application. Fig. 2 is a detail sectional view of forward end of tongue and devices thereat. Fig. 3 is a detail side view illustrating the lock to prevent the operation of brake.

This invention is designed to provide an automatic vehicle-brake of improved character operated by the horses in holding back, the back pressure of the neck-yoke on the tongue being utilized to set the brake; and the invention consists in the novel construction and combination of parts, all as hereinafter described, and pointed out in the appended claims.

In the accompanying drawings, 1 designates the tongue of the vehicle, provided with a metallic cap or tip-piece 2, having the shoulder 3.

4 is a sleeve or thimble-which has a sliding engagement with the end portion of the tippiece 2 and which is formed with a depending lug 5, against which the neck-yoke pressesl when the horses are backing or holding back. Pivoted to said lug is a bar 6, the opposite end of which is connected to a yoke 7. This yoke consists of two approximately S-shaped arms,which are centrally pivoted to opposite sides of the tongues and are connected at their upper and lower portions by means of transverse bars or bolts 7a. Connected to the upper bar or bolt 7 of said yoke is a jointed rod S,which runs back along the tongue and is connected at its rear end to a bent rod 9, whose end portions are respectively secured to two brake-beams 10 10. These brake-beams are shown as being supported and pivoted in brackets or clips 11,which are secured to the Serial No. 705,825. (No model.)

underside of the vehicle-body. 12 designates brake-shoes carried by the said beams. The rod S has a bearing inthe bolster 13 of the vehicle-body, through an aperture whereof it passes. Interposed between the sleeve or thimble 4 and the shoulder 8 of the tip-piece 2 is a stiff coiled spring 14.

It will be readily understood that the pressure of the neck-yoke against the lug 5 and the consequent rearward movement of the sleeve or thimble 4 will operate upon the rod 8 to set the brake-shoes and that as soon as the back pressure is released the spring 14 willact to release said shoes.

It becomes necessary to provide means for locking the above-described devices to prevent their operation when backing or cramping the vehicle on a level road or ground. For this purpose there is clamped on the rod 8 a two-part block 15, having an inclined projection 1G on its upper face to act as a hook. Secured in a block 17,which in turn is secured to the tongue, is an eyebolt 18, and loosely engaging said eyebolt is a ring 19, which is designed to be thrown over into engagement with the projection 16, as shown in Fig. 3, to thereby lock the rod 8 and prevent the setting of the brakes. Connected to the said ring is a rod 20,which extends up into position to be operated by the driver to enablehim toengage and release the said ring.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In an automatic brake, the combination with the vehicle-tongue and running-gear, and brake-beams carried by the latter, of the sleeve or thimble slidably mounted on the tongue and having a depending lug or projection which forms a bearing for the neckyoke, the yoke pivoted to the tongue, the bar connecting said lug or projection with the lower portion of said yoke, a connection between the upper portion of said yoke and the brake-beams, and a spring arranged to act in opposition to the pressure of said neck-yoke, substantially as specied.

2. In an automatic brake, the combination with the vehicle-tongue and running-gear, and brake-beams carried by the latter, of the sleeve or thimble slidably mounted on the tongue and having a depending lug or pro- IOO jection which forms a bearing for the neckyoke, the yoke pivoted to the tongue, the bar connecting said lug or projection with the lower portion of said yoke, a connection between the upper portion of said yoke and the brake-beams, and a spring arranged to act in opposition to the pressure of said neck-yoke, together with means for engaging and looking the connection between the yoke and the brake-beams, substantially as specified.

3. In an automatic Vehicle-brake, the combination with the Vehicle-tongue and running-gear, and pivoted brake-beams carried by said runnin g-gear, of a sleeve slidablyengaging the tongue and having a bearing for the neck-yoke, a spring arranged to act on said sleeve in opposition to the pressure of the neck-yoke, the yoke pivoted to the tongue in rear of said sleeve, the bar connecting said sleeve with the lower portion of said yoke, and the rod connecting the upper portion of said yoke with the brake-beams, together with means forlocking said rod to preventits movement,and for releasing said loek,substantiall y as specified.

Al. In an automatic brake, the combination with a vehicle-tongue and with pivoted brakebeams, of the sleeve slidably mounted on the forward portion of the tongue and having a depending lug which forms a bearing for the neck-yoke, a spring interposed between the rear end of said sleeve and a shoulder on the tongue, a bifurcated yoke pivoted to the tongue in rear of the said spring, a bar eonnecting the said lug with the lower portion of said yoke, and a jointed rod connecting the upper portion of said yoke with the brakeshoes, substantially as specified.

5. In a brake of the character described, the combination with the brake-shoes, means operated by pressure of the neck-yoke and a rod connecting the same with the brakebeams, of the hook device carried by said rod, the pivoted ring for engagement with said hook device, and means under control of the driver of the vehicle for operating said ring, substantially as specified.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE BRUHN.

Witnesses:

J. N. MAYBERRY, HENRY M. LAMBERTON. 

